MAHLE 3150200.015 Plasma Moly Piston Ring Set 4.135in Bore 1.5/1.5/3.0mm Ductile Iron

The MAHLE 3150200.015 is a performance plasma moly piston ring set designed for a 4.135-inch bore with a 1.5mm / 1.5mm / 3.0mm ring pack configuration and standard tension oil ring. Built to MAHLE's exacting motorsport standards, this set delivers superior sealing, reduced friction, and long-lasting durability for high-performance and racing engine builds.

Ring Construction:

• Top Compression Ring: Positive-twist ductile iron, barrel-faced with plasma-moly inlay for exceptional wear resistance and fast break-in
• Second Compression Ring: Reverse-twist, taper-faced cast iron for effective oil control and sealing
• Oil Control Ring: 3.0mm standard tension three-piece oil ring assembly for reliable oil scraping and cylinder wall lubrication management

Key Features:

• Bore diameter: 4.135 inches
• Ring pack dimensions: 1.5mm top / 1.5mm second / 3.0mm oil
• Plasma-moly inlaid top ring for superior scuff resistance and break-in performance
• Ultra-flat ring flanks and precision finish maximize ring-to-piston groove sealing
• Engineered using MAHLE's proprietary piston ring simulation and computer development tools to minimize friction and deliver measurable horsepower gains
• Standard tension oil ring for balanced oil control without excessive friction

MAHLE performance piston rings are trusted by professional engine builders and racers worldwide. The plasma-moly coating on the top ring accelerates seating against the cylinder wall while providing long-term durability under high heat and pressure conditions.